[issue21162] code in multiprocessing.pool freeze if inside some code from scikit-learn (and probably liblinear) executed on ubuntu 12.04 64 Bit

Davin Potts added the comment: I'm going ahead with closing this issue as it originates outside of multiprocessing and Python itself as well as being highly dependent upon specific combinations of build options and versions of 3rd party libraries (such as ATLAS). -- stage: -> resolve

[issue21162] code in multiprocessing.pool freeze if inside some code from scikit-learn (and probably liblinear) executed on ubuntu 12.04 64 Bit

Davin Potts added the comment: This appears to be highly dependent upon particular versions of operating systems and specific versions of various libraries, some built with certain options. It does not appear to be an issue in multiprocessing itself. @Ivan.K: Unless there is a clear example

[issue21162] code in multiprocessing.pool freeze if inside some code from scikit-learn (and probably liblinear) executed on ubuntu 12.04 64 Bit

Ivan K added the comment: This behaviour was reproduced on Ubuntu 12.04 and on Centos 7 (centos image running on vagrant) so I don't expect this is ddistro specific -- ___ Python tracker __

[issue21162] code in multiprocessing.pool freeze if inside some code from scikit-learn (and probably liblinear) executed on ubuntu 12.04 64 Bit

Davin Potts added the comment: @Ivan.K: Can you be more specific about which linux platform you are using? To reproduce, should I use Ubuntu, Fedora, OpenSUSE, ... and which version of that linux distro? -- ___ Python tracker

[issue21162] code in multiprocessing.pool freeze if inside some code from scikit-learn (and probably liblinear) executed on ubuntu 12.04 64 Bit

Ivan K added the comment: Sorry, forget to answer. I think I know the reason. Issue I think placed inside ATLAS library. Issue not reproducable on Mac OS X because it's have a bit different thread model. The only single platform is Linux (not tested on Windows btw). So main guess right now t

[issue21162] code in multiprocessing.pool freeze if inside some code from scikit-learn (and probably liblinear) executed on ubuntu 12.04 64 Bit

Davin Potts added the comment: It is no longer possible to reproduce the described issue. Changes to the relevant libraries since this issue was originally opened appear to have addressed the cause. Going ahead with closing this issue as there have been no further reports from the OP or othe

[issue21162] code in multiprocessing.pool freeze if inside some code from scikit-learn (and probably liblinear) executed on ubuntu 12.04 64 Bit

Davin Potts added the comment: I am unable to reproduce the described behavior using the script provided in that gist using Python 2.7.9 on OS X 10.10 with scikit-learn 0.15.2, scipy 0.14.0, numpy 1.9.0. For me, the sample code runs happily through to completion. Can the OP still reproduce th

[issue21162] code in multiprocessing.pool freeze if inside some code from scikit-learn (and probably liblinear) executed on ubuntu 12.04 64 Bit

Ivan K added the comment: Yes, it work fine and output was LogisticRegression(C=1.0, class_weight=None, dual=False, fit_intercept=True, intercept_scaling=1, penalty=l2, random_state=None, tol=0.0001) -- ___ Python tracker

[issue21162] code in multiprocessing.pool freeze if inside some code from scikit-learn (and probably liblinear) executed on ubuntu 12.04 64 Bit

Ivan K added the comment: Sorry, stupdi question. Forget that this is from my gist -- ___ Python tracker ___ ___ Python-bugs-list mail

[issue21162] code in multiprocessing.pool freeze if inside some code from scikit-learn (and probably liblinear) executed on ubuntu 12.04 64 Bit

Ivan K added the comment: Sorry, could you specify what is 'func' ? -- ___ Python tracker ___ ___ Python-bugs-list mailing list Unsubs

[issue21162] code in multiprocessing.pool freeze if inside some code from scikit-learn (and probably liblinear) executed on ubuntu 12.04 64 Bit

Richard Oudkerk added the comment: Could you try pickling and unpickling the result of func(): import cPickle data = cPickle.dumps(func([1,2,3]), -1) print cPickle.loads(data) -- ___ Python tracker ___

[issue21162] code in multiprocessing.pool freeze if inside some code from scikit-learn (and probably liblinear) executed on ubuntu 12.04 64 Bit

Ivan K added the comment: Yes, I'm not using any tool. Code just not working. -- ___ Python tracker ___ ___ Python-bugs-list mailing l

[issue21162] code in multiprocessing.pool freeze if inside some code from scikit-learn (and probably liblinear) executed on ubuntu 12.04 64 Bit

Richard Oudkerk added the comment: Ah, I misunderstood: you meant that it freezes/hangs, not that you used a freeze tool. -- ___ Python tracker ___ _

[issue21162] code in multiprocessing.pool freeze if inside some code from scikit-learn (and probably liblinear) executed on ubuntu 12.04 64 Bit

Ivan K added the comment: Sorry, I'm not sure I describe it correct. Freeze that means = goes fozen, so stop progress. It's do no do anything, but computations still load single core of my cpu for 100% untill I do not kill the python process. But the same code work's fine if executed outside p

[issue21162] code in multiprocessing.pool freeze if inside some code from scikit-learn (and probably liblinear) executed on ubuntu 12.04 64 Bit

Richard Oudkerk added the comment: I would guess that the problem is simply that LogisticRegression objects are not picklable. Does the problem still occur if you do not use freeze? -- ___ Python tracker

[issue21162] code in multiprocessing.pool freeze if inside some code from scikit-learn (and probably liblinear) executed on ubuntu 12.04 64 Bit

Changes by Ned Deily : -- nosy: +sbt ___ Python tracker ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/ma

[issue21162] code in multiprocessing.pool freeze if inside some code from scikit-learn (and probably liblinear) executed on ubuntu 12.04 64 Bit

New submission from Ivan K: Here is a code. https://gist.github.com/anonymous/9994217 When I run it in freeze and never end. If I run it without pool with loop or joblib - it works fine. Also there is a question on stackoverflow: http://stackoverflow.com/q/22881850/1888017 Python 2.7.6/2.7.3